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    <script>
        //值类型
        //赋值 将等号 右边的值复制一份给等号左边
        var num = 18;
        var num1 = num;
        console.log(num,num1);//18,18

        num1 = 20;
        console.log(num,num1);//18,20
        
        //引用类型
        //赋值 将等号 右边的值复制一份给等号左边
        var obj = {
            name:'老曾',
            age:18
        }
        var obj2 = obj;
        console.log(obj.age,obj2.age);//18,18

        obj2.age = 20;
        console.log(obj.age,obj2.age);//20.20

        // 作业
        var fn1 = function() {
            //函数体
            console.log('fn1打印结果');     
        }
        var fn2 = fn1;
        fn2();//得到的结果为

        /***
        赋值操作(=):把当前变量存储的值复制一份给接收的变量

        值类型的赋值：把当前变量的值(具体的数据)复制一份给接收的变量

        引用类型的赋值：把当前变量存储的值(具体数据的引用即地址)复制一份给接收的变量
        
        ****/
        
    </script>
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